<template>
  <div class="type-nav">
    <div class="container">
      <h2 class="all">全部商品分类</h2>
      <nav class="nav">
        <a href="###">服装城</a>
        <a href="###">美妆馆</a>
        <a href="###">尚品汇超市</a>
        <a href="###">全球购</a>
        <a href="###">闪购</a>
        <a href="###">团购</a>
        <a href="###">有趣</a>
        <a href="###">秒杀</a>
      </nav>
      <div class="sort">
        <div class="all-sort-list2" @mouseleave="isShowIndex = -1">
          <!-- 移入某个item,就将索引修改为当前值,代表当前悬浮在这个item上,就可以使用添加类名的方式修改其状态 -->
          <!-- 然后在移出时修改回去,就可以实现移入动态样式 -->
          <!-- 数据驱动样式 -->
          <div
            class="item"
            v-for="(category1, index) in cateGoryList"
            :key="category1.categoryId"
            :class="isShowIndex === index ? 'active' : ''"
            @mouseenter="isShowIndex = index"
          >
            <h3>
              <a href="">{{ category1.categoryName }}</a>
            </h3>
            <div class="item-list clearfix">
              <div class="subitem">
                <dl
                  class="fore"
                  v-for="category2 in category1.categoryChild"
                  :key="category2.categoryId"
                >
                  <dt>
                    <a href="">{{ category2.categoryName }}</a>
                  </dt>
                  <dd>
                    <em
                      v-for="category3 in category2.categoryChild"
                      :key="category3.categoryId"
                    >
                      <a href="">{{ category3.categoryName }}</a>
                    </em>
                  </dd>
                </dl>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapState, mapActions } from 'vuex'
export default {
  name: 'TypeNav',
  mounted() {
    this.getCatGoryListStore()
  },
  // for循环独立组件,可以使用单独的flag判断其中加载样式,但是集中使用for循环生成不可以使用
  // 需要利用其独立的数据进行单独判断,例如index和id等等,这里使用index
  data() {
    return {
      isShowIndex: -1,
    }
  },
  computed: {
    ...mapState('category', ['cateGoryList']),
  },
  methods: {
    ...mapActions('category', ['getCatGoryListStore']),
  },
}
</script>

<style lang="less" scoped>
.type-nav {
  border-bottom: 2px solid #e1251b;

  .container {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    position: relative;

    .all {
      width: 210px;
      height: 45px;
      background-color: #e1251b;
      line-height: 45px;
      text-align: center;
      color: #fff;
      font-size: 14px;
      font-weight: bold;
    }

    .nav {
      a {
        height: 45px;
        margin: 0 22px;
        line-height: 45px;
        font-size: 16px;
        color: #333;
      }
    }

    .sort {
      position: absolute;
      left: 0;
      top: 45px;
      width: 210px;
      height: 461px;
      position: absolute;
      background: #fafafa;
      z-index: 999;
      & .active {
        background-color: red;
        color: #fff;
        .item-list {
          display: block !important;
        }
      }
      .all-sort-list2 {
        .item {
          h3 {
            a {
              display: block;
              line-height: 30px;
              font-size: 14px;
              font-weight: 400;
              overflow: hidden;
              padding: 0 20px;
              margin: 0;
              color: #333;
            }
          }

          .item-list {
            display: none;
            position: absolute;
            width: 734px;
            min-height: 460px;
            background: #f7f7f7;
            left: 210px;
            border: 1px solid #ddd;
            top: 0;
            z-index: 9999 !important;

            .subitem {
              float: left;
              width: 650px;
              padding: 0 4px 0 8px;

              dl {
                border-top: 1px solid #eee;
                padding: 6px 0;
                overflow: hidden;
                zoom: 1;

                &.fore {
                  border-top: 0;
                }

                dt {
                  float: left;
                  width: 54px;
                  line-height: 22px;
                  text-align: right;
                  padding: 3px 6px 0 0;
                  font-weight: 700;
                }

                dd {
                  float: left;
                  width: 415px;
                  padding: 3px 0 0;
                  overflow: hidden;

                  em {
                    float: left;
                    height: 14px;
                    line-height: 14px;
                    padding: 0 8px;
                    margin-top: 5px;
                    border-left: 1px solid #ccc;
                  }
                }
              }
            }
          }

          &:hover {
            .item-list {
              display: block;
            }
          }
        }
      }
    }
  }
}
</style>
